Victron Energy Argo Diode Battery Combiner, For 2 Batteries, 12V and 24V, M6 Bolts

Overview

The Victron Energy Argo Diode Battery Combiner is a diode-based battery combiner for keeping a critical DC load powered from two available DC sources. It is used in 12V and 24V battery systems and is available in 40A or 80A maximum continuous current versions, both built around a two-battery layout.

On a boat, this type of unit is most often used where interruption is not acceptable, such as an electronic engine control system or another essential DC circuit. Two DC power sources can feed the same load in parallel, and if one source drops out, the other can continue supplying the critical load.

The combiner uses Schottky diodes for low voltage drop, with approximately 0.3 V drop at low current and approximately 0.45 V at rated output. Both variants use M6 bolt connections and share the same 60 x 120 x 75 mm housing size, which helps when planning a battery compartment, technical locker, or protected electrical panel installation.

Key features

• Combines two DC power sources to supply one mission-critical DC load.

• Available in 40A and 80A maximum continuous current versions for different load requirements.

• Suitable for 12V and 24V battery systems commonly found on marine DC installations.

• Schottky diode design keeps voltage drop low, approximately 0.3 V at low current and approximately 0.45 V at rated output.

• Failure of one connected source does not interrupt power to the critical load.

• M6 bolt connections support secure cable termination in a vibration-prone onboard electrical space.

• Compact 60 x 120 x 75 mm footprint with the same 0.8 kg weight across both variants.

Variants

This product is offered in two configurations that differ by maximum continuous current rating.

Both variants are made for two batteries, work with 12V and 24V nominal battery systems, use M6 bolt connections, and share the same dimensions and weight. The current rating is the key selection point when matching the combiner to the protected DC load.

• BCD000402000: Maximum Continuous Current 40A. This is the lower-current configuration in the range and keeps the same two-source, one-load layout as the 80A version.

• BCD000802000: Maximum Continuous Current 80A. This is the higher-current configuration in the range while retaining the same voltage support, connection style, and housing size.

Installation and setup

Mount the unit close enough to the batteries and protected load to keep cable runs sensible, while still leaving room for properly sized conductors, terminals, and service access. Because the housing can become hot in operation, it must be mounted on a non-flammable surface with adequate clearance around it.

The three-bolt layout is straightforward: each DC source connects to an input, and the protected DC load connects to the output. Cable sizing, overcurrent protection, and installation practices should match the current rating selected and the vessel’s DC electrical standards.

Electrical and system integration

The Argo Diode Battery Combiner is a simple fit for boats that need a dedicated backup path for an essential DC consumer without adding switching complexity at the load. It can be used in installations where two batteries or DC sources are available and the priority is keeping one critical circuit alive.

This product is a practical match for marine electrical refits, engine control power feeds, and other onboard DC systems where a single source failure should not shut down the connected equipment. It is not a charger or a battery monitor, so it should be integrated as part of a complete DC system with correct fusing and wiring.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Orders of $100 or more qualify for free shipping when eligible. For orders under $100, shipping costs are calculated at checkout based on destination, package weight, and selected service. International shipping is available for eligible products, and certain items may require additional handling, warehouse transfers, or may ship directly from the manufacturer, which can affect processing time.

Deliveries are handled by preferred carriers such as USPS, UPS, FedEx, DHL, and others depending on your location and selected service. Estimated delivery times are displayed at checkout and may vary due to customs processing, carrier delays, weather, postal disruptions, or other circumstances beyond our control. Once your order ships, you'll receive a confirmation email with tracking information. Tracking may take up to 24 hours to update on the carrier's website and is also available through your account when applicable.

We ship throughout the United States and to most international destinations for products eligible for international shipping. International orders may be subject to customs duties, taxes, brokerage charges, or other import fees, which are the customer's responsibility and are not included in the product or shipping price. PO Boxes are accepted only when shipping through USPS, and not all packages qualify for this option. If your order does not arrive within the estimated delivery window, please contact us at info@apollolighting.com or +1 (954) 375-0100 so we can assist with locating your package.

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Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

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Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

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